PAPER IMPROVING ADDITIVE

摘要

The invention relates to paper and paper products with new improved properties conferred by the use of additives made from water-soluble cationic polysaccharide graft copolymers, comprising a polymer backbone of at least one selected polysaccharide, on which copolymers comprising one or more nonionic monomer segments and one or more cationic monomer segments, are covalently attached. A favoured polysaccharide is starch. The additives allow for improved adsorption to the fibres use din said paper and paper products at the high conductivities present as a consequence of reduced or completely closed water circulation conditions, resulting in significantly improved end-properties in said paper and paper products.